There’s been a 140-year debate about whether two dolphin types most commonly seen in the waters off Southern California are related. Now, researchers affiliated with the National Oceanic and ...

How big they are: From 5 to 32 feet (1.5 to 10 meters) long, depending on the species Dolphins live in almost every ocean, except most tend to avoid the cold waters in the Arctic and around Antarctica ...

Off the coast of British Columbia, killer whales are tailing dolphins, and both seem to be rewarded with fishy meals. But not ...

Biologists discovered killer whales and dolphins working together to hunt salmon, a behavior never before documented in this ...

Three rare marine species were recently spotted off the coast of Thailand during a survey, photos show. Photo from the Thai Department of National Parks, Wildlife and Plant Conservation A trio of rare ...

Dolphins live in all the world’s oceans and even some of the largest freshwater rivers. Like whales, they’re considered cetaceans, or marine-dwelling mammals. There are four main families of dolphins, ...

Pink dolphins are an indicator species of the Amazon river, scientists say. Swimming with the piranhas and anacondas below the surface of the Amazon River in Bolivia is a rare species: pink, ...

A dolphin species considered regionally extinct in the Adriatic has been spotted there repeatedly off the Italian and Slovenian coast, according to research led by a marine scientist at the University ...